defence exam Indian Navy Chargeman/Draughtsman Mock Test 2023 Quantitative Aptitude Trigonometry

\(\frac{\cos \theta}{\sec \theta-1}+\frac{\cos \theta}{\sec \theta+1}\) ସମାନ ହେବ:

1
2sec2 θ
2
2cot2 θ
3
2cos2 θ
4
2sin2 θ
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